Method and apparatus of transmitting device-to-device channel measurement in a wireless communication system

    公开(公告)号:US11082876B2

    公开(公告)日:2021-08-03

    申请号:US17024464

    申请日:2020-09-17

    Abstract: A method and apparatus are disclosed from the perspective of a second User Equipment (UE) for performing sidelink transmission to a first UE. In one embodiment, the method includes the second UE generating a MAC (Medium Access Control) CE (Control Element) with a fixed or (pre-defined) priority value, wherein the MAC CE is for transmitting to the first UE. The method further includes the second UE generating a MAC PDU (Protocol Data Unit) comprising the MAC CE and sidelink data from one or more sidelink logical channels, wherein the sidelink data is available for transmitting to the first UE. Furthermore, the method includes the second UE setting a priority field in a first SCI to a fixed or (pre-defined) priority value of the MAC CE. In addition, the method includes the second UE transmitting the first SCI to the first UE, wherein the first SCI schedules a first sidelink transmission for transmitting the MAC PDU.

    METHOD AND APPARATUS FOR HANDLING DEVICE-TO-DEVICE FEEDBACK TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210136731A1

    公开(公告)日:2021-05-06

    申请号:US17076604

    申请日:2020-10-21

    Abstract: Methods and apparatuses for handling device-to-device feedback transmission in a wireless communication system are disclosed herein. In one method, a first device receives a configuration for operating in a network scheduling mode for acquiring sidelink resources. The first device receives a sidelink control information with a report request from a second device. The first device triggers or is triggered to transmit a report to the second device in response to the report request. If the first device has no available sidelink resource for transmitting the report, the first device triggers a scheduling request. The first device transmits a signaling of the scheduling request to the network. The first device receives a sidelink grant from the network. The first device utilizes sidelink resource(s) indicated by the sidelink grant to transmit the report to the second device.

    METHOD AND APPARATUS FOR DERIVING DOWNLINK PATHLOSS FOR DEVICE-TO-DEVICE TRANSMIT POWER CONTROL IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210022091A1

    公开(公告)日:2021-01-21

    申请号:US16932278

    申请日:2020-07-17

    Abstract: A method and apparatus are disclosed from the perspective of a device to perform sidelink transmission. The method includes the device being in RRC (Radio Resource Control)-connected mode in Uu link. The method also includes the device being configured to use at least DL (Downlink) pathloss for sidelink power control. The method further includes the device deriving a first DL pathloss value for determining an uplink transmit power of one specific kind of uplink transmission. In addition, the method includes the device determining or deriving a sidelink transmit power based on the first DL pathloss value. Furthermore, the method includes the device performing a sidelink transmission to other device(s) with the sidelink transmit power.

    METHOD AND APPARATUS FOR HANDLING RETRANSMISSION INDICATION FOR CONFIGURED GRANT IN SIDELINK IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20200351855A1

    公开(公告)日:2020-11-05

    申请号:US16851623

    申请日:2020-04-17

    Abstract: A method and apparatus are disclosed. In an example, a first device receives first information and second information from a base station. The first device is configured with a configured grant for sidelink communication via the first information. The configured grant is indicative of first resources for sidelink communication. The second information is indicative of one or more timing offsets and an identity for second resources. The first device transmits sidelink data to a second device via a first resource of the first resources. The first device receives and/or detects a first signal, from the second device, indicative of a reception result associated with the sidelink data. The first device determines a second time and a frequency location based on the second information. The first device transmits a second signal to the base station via a second resource associated with the second time and the frequency location.

    METHOD AND APPARATUS FOR CONTROL RESOURCE MONITORING CONSIDERING BEAM FAILURE RECOVERY IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20190253308A1

    公开(公告)日:2019-08-15

    申请号:US16275982

    申请日:2019-02-14

    Abstract: A method and apparatus are disclosed from the perspective of a UE (User Equipment). In one embodiment, the method includes the UE being configured with a first CORESET (Control Resource Set), wherein (i) the first CORESET is not used to monitor and/or receive a DCI (Downlink Control Information) scrambled by C-RNTI (Cell Radio Network Temporary Identifier) in response to transmitting a preamble for beam failure recovery, (ii) the UE is configured to perform a first number of channel estimation attempts and a second number of blind decode attempts for receiving and/or monitoring the PDCCH(s) (Physical Downlink Control Channel) candidates in the first CORESET in a first slot, and (iii) the UE is configured to perform the first number of channel estimation attempts and the second number of blind decode attempts for receiving and/or monitoring the PDCCH(s) candidates in the first CORESET in a second slot. The method also includes the UE being configured with a second CORESET, wherein (i) the second CORESET is not used to monitor and/or receive DL (Downlink) transmission if the UE does not transmit a preamble for beam failure recovery, (ii) the second CORESET is used to monitor and/or receive a DCI scrambled by C-RNTI in response to transmitting a preamble for beam failure recovery, and (iii) the UE is configured to perform a third number of channel estimation attempts and a fourth number of blind decode attempts for receiving and/or monitoring the PDCCH(s) candidates in the second CORESET in the second slot. The method further includes the UE transmitting a preamble for beam failure recovery in response to the UE detecting that beam failure occurs. In addition, the method includes the UE monitoring and/or receiving a DCI scrambled by C-RNTI in the second CORESET in the second slot in response to transmitting the preamble for beam failure recovery. Furthermore, the method includes the UE prioritizing to receive and/or demodulate the DCI scrambled by C-RNTI in the second CORESET in the second slot, if the first number plus the third number exceeds the first maximum number or the second number plus the fourth number exceeds the second maximum number in the second slot.

    METHOD AND APPARATUS FOR MONITORING FOR INTERRUPTED TRANSMISSION INDICATION IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20190246395A1

    公开(公告)日:2019-08-08

    申请号:US16104814

    申请日:2018-08-17

    Abstract: A method and apparatus are disclosed from the perspective of a UE (User Equipment) and/or a base station. In one embodiment, the method includes the base station configuring the UE with a first serving cell and a second serving cell. The method also includes the base station configuring the UE with a periodicity for monitoring a downlink control signal in the first serving cell, wherein the base station is not allowed to configure the UE such that the periodicity includes a non-integer number of symbol(s) of the second serving cell, and wherein the downlink control signal includes a pre-emption indication (PI) for the second serving cell.

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